2086862905 has 4 divisors (see below), whose sum is σ = 2504235492. Its totient is φ = 1669490320.

The previous prime is 2086862903. The next prime is 2086862917. The reversal of 2086862905 is 5092686802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1432168336 + 654694569 = 37844^2 + 25587^2 .

It is not a de Polignac number, because 2086862905 - 2¹ = 2086862903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2086862903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208686286 + ... + 208686295.

It is an arithmetic number, because the mean of its divisors is an integer number (626058873).

Almost surely, 2^2086862905 is an apocalyptic number.

It is an amenable number.

2086862905 is a deficient number, since it is larger than the sum of its proper divisors (417372587).

2086862905 is an equidigital number, since it uses as much as digits as its factorization.

2086862905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417372586.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 2086862905 is about 45682.1946167213. The cubic root of 2086862905 is about 1277.9032454672.

The spelling of 2086862905 in words is "two billion, eighty-six million, eight hundred sixty-two thousand, nine hundred five".